Streaming assistant-selection jigging sorting method

Abstract

The invention discloses a streaming assistant-selection jigging sorting method. A streaming device is additionally arranged in a bed layer so as to generate a local streaming area and streaming motion, a horizontally flowing water flow generates negative pressure in a tail flow area of a streaming motion plane, so that a part of relatively heavy sorted materials is gathered in the area, the horizontally flowing water flow generates a local loosing area in the tail flow area of the streaming motion plane, and accordingly local loose degree of the bed layer is improved. When the streaming assistant-selection jigging sorting method is used for sorting ores or coal, effects of improving sorting precision and a sorting lower limit can be obtained, water consumption is further reduced, processing quantity is increased, and the streaming assistant-selection jigging sorting method is brand-new and is particularly applicable to jigging sorting of high slack coal.

Description

Technical field [0001] The invention relates to a jigging and sorting method, in particular to a jigging and sorting method with flow-around aided selection. Background technique [0002] At present, in the air pulsation jigging separation methods at home and abroad, the movement of the jigging bed is mainly composed of two basic movements, the up and down movement under the action of the up and down pulsating water flow and the horizontal movement under the action of the horizontal flowing water flow. The up and down movement of the machine completes the sorting work of the sorted materials, while the horizontal movement mainly undertakes the horizontal transportation of the sorted materials. This method has not changed in the production practice of nearly a hundred years since the method was produced, but with the expansion of the scope of use and the further improvement of the jigging efficiency, especially the use of this method for jigging separation of fine materials ...

AI Technical Summary

Problems solved by technology

This method has not changed in the production practice of nearly a hundred years since the method was produced, but with the expansion of the scope of use and the further improvement of the jigging efficiency, especially the use of this method for jigging separation of fine materials At the same time, it was found that the method had the following problems: ①The flow rate of the surface water layer was high, and some fine materials flowed in the surface water, and were not sorted; ②The water consumption was large, and the small amount of water would cause insufficient bed looseness, which would affect the method. ③ When the content of fine coal is too much, the upper part of the bed is easy to harden, and the upper layer is not well separated; ④ The lower limit of comprehensive separation can only reach 0.5mm; ⑤ The energy of flowing water does not participate in the separation

These problems limit the application of this method and affect the further improvement of the method's sorting accuracy and lower limit.